r

问题 I am trying to scrape data frame the following website http://stats.nba.com/game/0041700404/playbyplay/ I'd like to create a table that includes the date of the game, the scores throughout the game, and the team names I am using the following code: game1 <- read_html("http://stats.nba.com/game/0041700404/playbyplay/") #Extracts the Date html_nodes(game1, xpath = '//*[contains(concat( " ", @class, " " ), concat( " ", "game-summary-team--vtm", " " ))]//*[contains(concat( " ", @class, " " ),

问题 I would like to return values with matching conditions in another column based on a cut score criterion. If the cut scores are not available in the variable, I would like to grab closest larger value. Here is a snapshot of dataset: ids <- c(1,2,3,4,5,6,7,8,9,10) scores.a <- c(512,531,541,555,562,565,570,572,573,588) scores.b <- c(12,13,14,15,16,17,18,19,20,21) data <- data.frame(ids, scores.a, scores.b) > data ids scores.a scores.b 1 1 512 12 2 2 531 13 3 3 541 14 4 4 555 15 5 5 562 16 6 6

问题 I'm using ggplot2 , which by default creates histograms with fixed bin widths and whose bin labels are plotted in the center of each bin. What I want instead is a variable-width histogram whose bin labels are representative of the end points of each bin, like this plot: To produce this example plot, I manually entered the bin parameters and shifted the bins to align them with their end points: income=data.frame(lx=c(0,10,25,50,100),rx=c(10,25,50,100,150),y=c(20,28,27,18,7)) income$width =

问题 I'm trying to rotate the R package based igraph network plot. In the igraph guidebook not enough explanation how to use R code tk_rotate(tkp.id, degree = NULL, rad = NULL) 回答1: For the R package igraph according to the documentation: the tk_rotate rotates the figure, its parameter can be given either in degrees or in radians. Of particular note is the argument tkp.id . Make sure you assign the tkplot window to this value so you can reference it as the tkp.id in the function. tkp.id The id of

问题 I'm using ggplot2 , which by default creates histograms with fixed bin widths and whose bin labels are plotted in the center of each bin. What I want instead is a variable-width histogram whose bin labels are representative of the end points of each bin, like this plot: To produce this example plot, I manually entered the bin parameters and shifted the bins to align them with their end points: income=data.frame(lx=c(0,10,25,50,100),rx=c(10,25,50,100,150),y=c(20,28,27,18,7)) income$width =

问题 I'm using ggplot2 , which by default creates histograms with fixed bin widths and whose bin labels are plotted in the center of each bin. What I want instead is a variable-width histogram whose bin labels are representative of the end points of each bin, like this plot: To produce this example plot, I manually entered the bin parameters and shifted the bins to align them with their end points: income=data.frame(lx=c(0,10,25,50,100),rx=c(10,25,50,100,150),y=c(20,28,27,18,7)) income$width =

问题 I'm using ggplot2 , which by default creates histograms with fixed bin widths and whose bin labels are plotted in the center of each bin. What I want instead is a variable-width histogram whose bin labels are representative of the end points of each bin, like this plot: To produce this example plot, I manually entered the bin parameters and shifted the bins to align them with their end points: income=data.frame(lx=c(0,10,25,50,100),rx=c(10,25,50,100,150),y=c(20,28,27,18,7)) income$width =

问题 I would like to return values with matching conditions in another column based on a cut score criterion. If the cut scores are not available in the variable, I would like to grab closest larger value. Here is a snapshot of dataset: ids <- c(1,2,3,4,5,6,7,8,9,10) scores.a <- c(512,531,541,555,562,565,570,572,573,588) scores.b <- c(12,13,14,15,16,17,18,19,20,21) data <- data.frame(ids, scores.a, scores.b) > data ids scores.a scores.b 1 1 512 12 2 2 531 13 3 3 541 14 4 4 555 15 5 5 562 16 6 6

问题 I would like to return values with matching conditions in another column based on a cut score criterion. If the cut scores are not available in the variable, I would like to grab closest larger value. Here is a snapshot of dataset: ids <- c(1,2,3,4,5,6,7,8,9,10) scores.a <- c(512,531,541,555,562,565,570,572,573,588) scores.b <- c(12,13,14,15,16,17,18,19,20,21) data <- data.frame(ids, scores.a, scores.b) > data ids scores.a scores.b 1 1 512 12 2 2 531 13 3 3 541 14 4 4 555 15 5 5 562 16 6 6

问题 I would like to return values with matching conditions in another column based on a cut score criterion. If the cut scores are not available in the variable, I would like to grab closest larger value. Here is a snapshot of dataset: ids <- c(1,2,3,4,5,6,7,8,9,10) scores.a <- c(512,531,541,555,562,565,570,572,573,588) scores.b <- c(12,13,14,15,16,17,18,19,20,21) data <- data.frame(ids, scores.a, scores.b) > data ids scores.a scores.b 1 1 512 12 2 2 531 13 3 3 541 14 4 4 555 15 5 5 562 16 6 6